28381143

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 47918304

約数和(自身を除く): 19537161

約数列:

[1, 3, 7, 17, 21, 41, 49, 51, 119, 123, 147, 277, 287, 357, 697, 831, 833, 861, 1939, 2009, 2091, 2499, 4709, 4879, 5817, 6027, 11357, 13573, 14127, 14637, 32963, 34071, 34153, 40719, 79499, 98889, 102459, 193069, 230741, 238497, 556493, 579207, 692223, 1351483, 1669479, 4054449, 9460381, 28381143]

約数ペア:

[(1, 28381143), (3, 9460381), (7, 4054449), (17, 1669479), (21, 1351483), (41, 692223), (49, 579207), (51, 556493), (119, 238497), (123, 230741), (147, 193069), (277, 102459), (287, 98889), (357, 79499), (697, 40719), (831, 34153), (833, 34071), (861, 32963), (1939, 14637), (2009, 14127), (2091, 13573), (2499, 11357), (4709, 6027), (4879, 5817)]